Properties of the Number 79780

Seventy-Nine Thousand Seven Hundred Eighty

Basics

Value: 79779 → 79780 → 79781

Parity: even

Prime: No

Previous Prime: 79777

Next Prime: 79801

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 5 × 3989

Divisors: 1, 2, 4, 5, 10, 20, 3989, 7978, 15956, 19945

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011011110100100

Octal: 233644

Duodecimal: 3A204

Hexadecimal: 137a4

Square: 6364848400

Square Root: 282.4535360019414

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of integer partitions of n whose length is not a semi-sum of the parts. A367398

a(0) = 1; a(n+1) is the smallest number not in the sequence such that a(n+1) - ∑_i=1..n a(i) divides a(n+1) - ∏_i=1..n a(i). A254343

Number of n-node animals on b.c.c. lattice. A7197

a(n) = largest prime <= n·prime(n). A79780